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Question
A uniform rod of mass m and length l is in equilibrium under the constraints of horizontal and vertical rough surfaces. Then :
- the net torque due to friction about O is zero
- the net torque due to normal reactions is numerically equal to the net torque due to the frictional force about the CM of the rod
- all of the above
The correct answers are: , the net torque due to friction about O is zero, the net torque due to normal reactions is numerically equal to the net torque due to the frictional force about the CM of the rod, all of the above
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